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revision 1.519 by heimbach, Thu Jul 28 14:35:47 2005 UTC revision 1.632 by mlosch, Wed Mar 15 19:52:16 2006 UTC
# Line 4  $Name$ Line 4  $Name$
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7  o adding precip control xx_precip  o seaice:
8  o moved ptracer ctrl index 17 -> 32    - modify advection so that it works also on the C-grid
9      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
10        problem in multi-tile runs with C-grid
11      - remove velocity clipping from seaice_dynsolver with C-grid
12      - fix drag (ocean on ice) formulation and a bug that caused noise in the
13        C-grid solver
14      - added a few comments to seaice_diffusion.F
15      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
16        are now exclusive)
17      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
18        required re-ordering the code a little:
19       + make DAIRN global variable (defined in SEAICE)
20       + move computation of the viscosities eta and zeta into a new separate
21         routine (because I need to recompute them in seaice_ocean_stress.F)
22    
23    checkpoint58b_post
24    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
25      update output.txt of exp. aim.5l_cs.thSI
26    o various mnc cleanups and improvements:
27      + shrink lookup tables by factor of ~4
28      + better error reporting when running out of lookup space
29      + able to handle longer path/file names (up to 500 chars)
30    o adjoint:
31      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
32      - TBD: "hidden" mom_vecinv recomp. in dynamics
33    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
34     (allow to differentiate between forcing components using new integer flags:
35      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
36     and add new flag to put Dissipation tendency out of Adams-Bashforth.
37    o ecco
38      - enable trend removal from SSH anomaly obs.
39    o adjoint
40      - a fix for PmEpR when #undef EXACT_CONSERV
41      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
42      - try to fix "hidden" recomp. in forward_step for NLFS
43        (NLFS seems broken sometimes after I checked it in)
44    o seaice:
45     - add c-grid version of the dynamic solver:
46       + three new routines that are the c-grid substitute lsr, dynsolver
47         and ostres
48       + put a few fields that were local to dynsolver into global common
49         blocks, so that I can move the computation of stresses etc into
50         seaice_lsr (saves coding but may break the adjoint).
51     - replace more hardwired parameters by runtime parameters
52     - add ice masks that mask the rhs of the implicit solvers where there
53       is no ice (commented out in seaice_dynsolver, because i am not sure
54       if this works properly), eventually this should replace the clipping
55       of ice velocities in seaice_dynsolver to +/-40cm/s.
56    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
57      include it only where its needed
58    o move balancing of fluxes before the call of external_forcing_surf
59    o seaice:
60      - correct units of turning angles (now they are really in degrees)
61      - move computation of GWATX/Y out of main routine into dynsolver
62      - initialize GWATX/Y in seaice_init
63    o Apply mask on Fresh-Water flux (needed for SSH forcing).
64      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
65    o seaice: add runtime flags for turning angles (default to zero)
66    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
67      and trend from exf forcing and ctrl control adjustments
68    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
69      (since checkpoint57x_post)
70    o change the default rotation period to 86164.s = the Earth rotation
71    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
72      and based on a reference stratification. Tested within hs94.cs-32x32x5.
73    o seaice advection: add code for choosing between the default (2nd order
74      central differences) and multiDim advection schemes provided by
75      pkg/generic_advdiff
76    o seaice:
77      - removed all references to SEAICE_GRID.h fields from
78        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
79        (cubed-sphere configuration will change a little)
80      - grid computations in seaice_init are obsolete now.
81      - cleaned up code a little so that is easier to read (hopefully).
82      - added new (better?) discretizations of default advection and diffusion
83        (turn on with SEAICEuseFluxForm)
84      - replace 1 in 3d global fields by kSurface in growth.F
85      
86    checkpoint58a_post
87    o seaice:
88      - bug fix in advect.F
89    o shelfice:
90      - separate shelfice load anomaly from pload (breaks with time
91        dependent forcing), => introduce constant field shelficeLoadAnomaly.
92        Its default is 0., but it may be computed more cleverly from (unknown)
93        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
94        done offline. A good approximation of the pressure load anomaly is
95        necessary to avoid large initial adjustment processes underneath
96        deep-reaching shelfice.
97      - small fix in ISOMIP shelfice_thermodynamics
98      - add more sophisticated thermodynamics of Hellmer (1989), this is
99        now the default
100      - give a few constants more intuitive names
101    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
102      if bulk formulae are used in long integration (especially EmPmR). Turn
103      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
104      if balancePrintMean, the imbalance that is substracted is printed to
105      STDOUT.
106    o fix bug (typo) in obcs_apply_eta.F
107    o add a new package shelfice which enables us to model the circulation
108      underneath shelf-ice with draughts of hundreds of meters.
109     - works
110     - to do: + include improved thermodynamics
111              + check whether kSurfC (from model/inc/SURFACE.h) can be used
112                instead of new field kTopC
113              + can we use topoFile, Ro_surf and existing code in ini_depth.F
114                instead of new field R_shelfIce and new code in ini_depth.F
115                and ini_mask_etc.F?
116              + adjust vertical mixing schemes?
117    o seaice pkg:
118     - add a cpp-flag to include a simple formula for a salinity dependent
119       freezing point of sea water at the surface
120     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
121       meridional stresses are now different (and hopefully correct)
122    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
123       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
124       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
125    o pkg/diagnostics: add options and parameters for regional-statistics
126       diagnostics ; define regions by reading a region-mask from a file
127       (might add other options later)
128    o pkg/bulk_force:
129     - add option and parameters to use AIM surface-flux formulae.
130     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
131       others forcing fields (defined in PARM05, parameter file "data") are loaded
132       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
133     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
134     - use the right EXCH call for uwind,vwind (to work on CS-grid).
135     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
136       and parameters (note: calcWindStress replaces .NOT.readwindstress).
137     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
138    
139    checkpoint58
140    o add "--embed-source" option to genmake2 which, when the supporting
141      tools can be compiled (as determined by genmake2) will turn on the
142      embed_files package which then embeds the entire MITgcm source code
143      (*.[fFhc] + Makefile) used for the build within the executable
144      - requested by CNH but off by default
145      - adds a paltry <9MB to the mitgcmuv executable in most cases
146      - only writes the output when useEMBEDSRC in eedata is true
147    o clean up 3-dim. relaxation codes:
148      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
149      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
150      * Thanks to Tom Haine for testing!
151    
152    checkpoint57z_post
153    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
154      affects output (@ truncation level) of exp. plume_on_slope ; updated.
155    o fix the pickup behavior for obcs in combination with ptracers
156    o fix a bug in ptracers_external_fields_load
157    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
158      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
159    o transfered surface NH pressure to eta field (if exactConserv).
160    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
161         and update lab_sea output.txt file.
162    o completing 3-dim. relaxation code: additional term
163         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
164      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
165      * At compile time, in "EXF_OPTIONS.h" set
166          #define  ALLOW_CLIMTEMP_RELAXATION
167          #define  ALLOW_CLIMSALT_RELAXATION
168      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
169          tauThetaClimRelax3Dim = 15552000.0,
170          tauSaltClimRelax3Dim  = 15552000.0,
171      * 3 cases:
172          1) Use a constant-in-time 3-dim. field
173          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
174          3) Real-time relax. to time-evolving prescribed field
175    o Adding Laplacian-type smoothness constraint on
176      initial and boundary (forcing) controls (ic, bc)
177      * enable at compile-time via
178        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
179      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
180      * Absolute scale somewhat unclear so far
181      * no area weighting was included since no other cost term does so far
182    
183    checkpoint57y_post
184    First step for a NLFS adjoint
185    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
186    o new init. routines for calc_r_star, calc_surf_dr
187    o still need to deal with ini_masks_etc
188    o testreport seemed happy
189    checkpoint57y_pre
190    
191    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
192    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
193    o add new offset feature to offline pkg (plus minor cleanup)
194    o cfc fixes for final year of integration
195    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
196      be in GCHEM_OPTIONS).
197    
198    checkpoint57x_post
199    o fix testreport Pb in multiple test experiment.
200    o cleanup our namelist syntax in verification:
201      - make it more F95 standards compliant (some work still needed)
202      - allows the vast majority of our tests to work with gfortran
203    o Non-Hydrostatic:
204     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
205     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
206    o Allow to apply AB on T,S rather than on AB(gT,gS):
207     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
208     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
209       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
210     - need a "clever" read_pickup to restart from the other AB formulation
211    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
212    o remove some unused variables (reduces number of compiler warnings)
213    o adjoint
214      * Disable useVariableViscosity for adjoint for time being
215        (there are a number of extensive recomputations)
216      * Initialize certain variables needed for adjoint
217    
218    checkpoint57w_post
219    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
220                 fix the singleCpuIO RS version of MDSWRITEFIELD
221       and add a WARNING if using globalFiles=T with multi-processors.
222    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
223      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
224    o tracer advection scheme:
225      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
226       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
227       was not very convenient).
228      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
229       (further tests needed for the implicit DST & Flux-Limiter schemes).
230    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
231      and sRef for convenience, handy, when you want to initialize
232      ptracers in a large domain with a constant non-zero value. Also,
233      untangle ptracers_init.F a little.
234    
235    checkpoint57v_post
236    o change dome exp. to use variable viscosity in side-drag terms.
237    o remove all the files from the cfc_offline test since they are now
238      incorporated into tutorial_cfc_offline which has been producing
239      identical results for a few days of testing
240    o add new parameter: sideDragFactor to enable half-slip-side BC
241      and change side-drag S/R to use viscosity from mom_calc_visc
242      (can switch back by setting sideDragFactor=0.); affects results at
243      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
244       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
245    o vorticity & strain are now computed without masking, to account for
246      no-slip-side BC in variable viscosity calculation ; mask is applied
247      anyway later on, before computing advection/coriolis terms.
248    o modify exp4 to test new obcs support for reading from external files
249      and for passive tracers
250    o fix behavior of ptracers_monitor when monitor output is written to a
251      netcdf-file; still not independent of monitor.F (writes in the same
252      file).
253    o change default value of tRef (put a uniform, meaningful value for ocean
254      & atmos) and initialize sRef (was missing, as Martin mentioned).
255    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
256      to be proportional to enstrophy dissipation length.  Thus,
257       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
258      This is now consistent with Smagorinsky and with the manual.
259    
260    checkpoint57u_post
261    o OBCS and PTRACERS: add open boundary support for passive tracers
262      - either use homogenous (pseudo) v.Neumann conditions or prescribe
263        OB-values from file; this is not different from the way theta and salinity
264        are treated
265      - however, Orlanski-radiation conditions are not supported, and the model
266        will stop if you use pTracers and Orlanski at the same time.
267      - beefed up the rountine obcs_external_fields_load: now only those open
268        boundary values are overwritten with values from files for which there
269        are really files, otherwise the OB-fields remain untouched. This makes
270        it possible to use different OBs at different ends of the domain (as
271        with EXF)
272    o reduce number of exch calls in shap_filt (s2).
273    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
274      truncation level) 4/5 MLAdjust test results (11&12 digits match).
275    
276    checkpoint57t_post
277    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
278    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
279      same truncation, independent of the face number: affects affects several
280      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
281    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
282      note that biharmonic viscosity + no-slip was not tested in any experiment.
283    o fix bug in non-linear free-surf side-drag ; generate new output for
284      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
285    o make mnc honor the writeBinaryPrec flag for most kinds of output
286    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
287    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
288      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
289    o add brackets in multi-terms sum to get same truncation, independent of
290      the face number (manage to get exactly same value of gU,gV at the cs-edge)
291      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
292    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
293      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
294      a maximum grid-scale Reynolds number.  Also, changes all length calculations
295      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
296      Suggested values of viscosity parameters found in mom_calc_visc.
297      Many new viscosity diagnostics available.
298    
299    checkpoint57s_post
300    o Add clearing-house for viscosity calculations, mom_calc_visc and
301      correct numerous bugs in LeithD and Smagorinsky discretizations.  
302      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
303      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
304      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
305      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
306      The Strain-Tension form is now called with useStrainTensonVisc=.true.
307      ViscAhStrain and viscAhTension are now retired.
308    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
309    o In response to JMC's bug report, genmake2 now ignores any soft-links
310      that it finds in the *current* directory when searching for files.
311      Soft-links found in any other source directories will still work as
312      they did before.
313    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
314      a C routine to unlimit the stack size
315    o mnc-ify pkg/aim snapshot vars
316    o mnc-ify pkg/land as requested by Daniel
317    o various changes to mnc including:
318      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
319      - output can now be grouped so that all files within a group
320          change the ITER portion of their names in lock-step together
321      - can now read ("global") PER-FACE (in addition to PER-TILE) files
322          and works with both EXCH1 and EXCH2 (but needs more testing)
323      - writing works for all verification test cases w/ g77 on Linux
324    
325    checkpoint57r_post
326    o make MNC variable initialization happen earlier
327    o add diagnostics for (almost) each term of the momentum Eq.
328    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
329    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
330    o remove MINIMAL_TAVE_OUTPUT option ;
331      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
332    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
333      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
334    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
335    o add time-dependent SST, SSS control
336    o cost terms in ecco/ modularized (new cost_generic.F)
337    o cost_averages routines are modularized (new cost_averagesgeneric.F)
338    o new infrastructure for seaice model vs. obs misfits in seaice/
339      * driver from the_main_loop.F is seaice_cost_driver.F
340      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
341      * gradient check in Exp. 6a of natl_box_adjoint/
342    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
343      (see README file)
344    
345    checkpoint57q_post
346    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
347    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
348      - bug was reported by Jean-Michel and Ian Fenty
349    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
350      update exp. cpl_aim+ocn output.
351    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
352      Needed for high-res. runs with large global files
353      to be able to limit tapelev size
354    o Changed some tests for adjoint:
355      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
356      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
357      * global_ocean.90x40x15/ back to default 3-level checkpointing
358    o Modifications to enable scripted COMMON to MODULE conversion
359      * verification/OpenAD/code/ has necessary scripts and description;
360      * converts, compiles and runs successfully;
361    
362    checkpoint57p_post
363    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
364    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
365      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
366    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
367    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
368      (was already the case for dissipation with mom_vecinv,
369       and also the case for grad.PhiHyd when staggered-timeStep)
370      This will allow to put dissipation out-off the AB time-stepping.
371     Unfortunately, affects truncation error. Update output of exp. that "fails"
372      (cg2d matching number) and leave the others for later: front_relax(10),
373      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
374      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
375    
376    checkpoint57o_post
377    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
378      (2) its ready to be documented during the 20050801 DocFest
379    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
380      for ideal_2D_oce and lab_sea on linux_ia32_g77
381    o set to #undef CTRL_SET_OLD_MAXCVARS_30
382      in global1x1_tot/code_seaice_adj to access indices 32, 33
383      (worth another tag)
384    
385    checkpoint57n_post
386    o adding precip control xx_precip 32
387    o adding swflux control xx_swflux 33
388    o Replacing 10 forcing penalty cost routines by 1 generic.
389    o Implementing partitioning in time-mean and variable adjustment
390      for atmos. state.
391    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
392  o in natl_box_adjoint:  o in natl_box_adjoint:
393    * updated: results_bulk/    * updated exp 1 to 10
394    * not yet updated: results/, results_seaice/      (but does not have time-mean vs. variable split results yet)
395    o updated global1x1/*_seaice_adj/
396      to incorporate latest changes
397    o enable useSingleCpuIO for mdsio vector routines
398      (applies in particular to tapelev I/O)
399    o removed inefficient K-loop in all active_file*control*.F
400    
401  checkpoint57m_post  checkpoint57m_post
402  o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)  o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)

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